Robert Stewart, 1st Marquess of Londonderry
type: Person
description: Irish politician, born 1739
birth date: 1739-09-27
death date: 1821-04-06
death place: County Down
nationality: Ireland
parent: Alexander Stewart
parent: Mary Cowan
spouse: Frances Stewart
spouse: Sarah Seymour
children: Robert Stewart, Viscount Castlereagh
children: Charles Vane, 3rd Marquess of Londonderry
children: Octavia Stewart
children: Lady Matilda Stewart
children: Lady Georgiana Stewart
children: Lady Caroline Stewart
children: Lady Selina Stewart
children: Frances Stewart
children: Lady Emily Stewart
sibling: Alexander Stewart
has occupation: politician
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retrieved: 2023-02-10

source: Virtual International Authority File
stated in qid: Q54919
retrieved: 2017-11-01

source: SNAC
stated in qid: Q29861311
retrieved: 2017-10-09

source: Stewart, Robert
stated in qid: Q19066173

source: The Peerage
stated in qid: Q21401824

source: Genealogics
stated in qid: Q19847326

stated in qid: Q75653886

wikidata id: Q5192091
domain: human
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data source: Wikidata (CC0 / public domain)
license: https://creativecommons.org/publicdomain/zero/1.0/
api version: v1
served at: 2026-08-02T10:07:58.656229Z
entity updated at: 2026-04-10T23:17:04.081251+00:00Z
entity created at: 2026-04-10T23:17:04.081251+00:00Z